You can always do a barrel swap.Right, you can shoot 2 3/4" or 3" in this gun. Changing the configuration of the rings is very simple to do.
However, you cannot shoot steel shot out of these old Belgian Brownings and you really shouldn't shoot steel through a full choke anyways. So it is out as a waterfowl gun unless you shoot an alternate non-tox shot like bismuth or hevi, which is just very expensive. And still, full choke is not ideal for waterfowl.
Would be a good turkey gun, though. If it was a Modified choke I'd want it bad.

